Fluorinated alcohols are alkyoxylated using catalysts which provide reaction products having low surface tensions and which are stable in severe acidic conditions.
使用催化剂对氟化醇进行烷氧基化,催化剂可提供表面张力低且在强酸性条件下稳定的反应产物。
Self-Assembly of Semifluorinated Dendrons Attached to Electron-Donor Groups Mediates Their π-Stacking via a Helical Pyramidal Column
作者:Virgil Percec、Martin Glodde、Mihai Peterca、Almut Rapp、Ingo Schnell、Hans W. Spiess、Tushar K. Bera、Yoshiko Miura、Venkatachalapathy S. K. Balagurusamy、Emad Aqad、Paul A. Heiney
DOI:10.1002/chem.200501195
日期:2006.8.16
Semifluorinated first-generation self-assembling dendrons attached via a flexible spacer to electron-donor molecules induce pi-stacking of the donors in the center of a supramolecular helical pyramidalcolumn. These helical pyramidalcolumns self-organize in various columnar liquid crystal phases that mediate self-processing of large single crystal liquid crystal domains of columns and self-repair
Unsymmetrical Spiroalkanedithiols Having Mixed Fluorinated and Alkyl Tailgroups of Varying Length: Film Structure and Interfacial Properties
作者:Pawilai Chinwangso、Lydia St. Hill、Maria Marquez、T. Lee
DOI:10.3390/molecules23102632
日期:——
A custom-designed series of unsymmetrical spiroalkanedithiols having tailgroups comprised of a terminallyfluorinated chain and a hydrocarbon chain of varying lengths were synthesized and used to prepare self-assembled monolayers (SAMs) on gold substrates. The specific structure of the adsorbates was of the form [CH₃(CH₂)n][CF₃(CF₂)₇(CH₂)₈]C[CH₂SH]₂, where n = 7, 9, and 15 (designated as F8H10-C10
合成了一系列定制设计的不对称螺烷二硫醇,其尾基由末端氟化链和不同长度的烃链组成,并用于在金基底上制备自组装单分子层(SAM)。吸附物的具体结构为[CH3(CH2)n][CF3(CF2)7(CH2)8]C[CH2SH]2形式,其中n = 7、9和15(指定为F8H10-C10,分别为 F8H10-C12 和 F8H10-C18)。探讨了双齿二硫醇中烃链长度对单层结构和界面性质的影响。使用结构类似的部分氟化单齿链烷硫醇和相应的正链烷硫醇来生成适当的 SAM 作为参考系统。椭圆厚度的测量显示,源自双齿吸附物的 SAM 的膜厚度出乎意料地低,这可能是由于氟碳链引起的链间堆积破坏(即,相不相容的氟碳化合物-烃相互作用),最终导致松散堆积和无序的电影。X 射线光电子能谱 (XPS) 分析也与薄膜松散堆积的模型一致;此外,XPS 光谱证实了双齿吸附物的硫头基附着在金基底上。通过偏振调制红外反射吸附光谱(PM-IRRAS)对